[PATCH 07/10] ARM: OMAP3: PRM: move PRM init code from PM core to the driver
Tero Kristo
t-kristo at ti.com
Fri Jul 4 07:10:32 PDT 2014
Helps to isolate the PRM driver.
Signed-off-by: Tero Kristo <t-kristo at ti.com>
---
arch/arm/mach-omap2/pm34xx.c | 71 +-------------------------------
arch/arm/mach-omap2/prm3xxx.c | 90 +++++++++++++++++++++++++++++++++++++++++
arch/arm/mach-omap2/prm3xxx.h | 1 +
3 files changed, 92 insertions(+), 70 deletions(-)
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index acb895d..3ea04ac 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -376,79 +376,10 @@ static void __init omap3_d2d_idle(void)
static void __init prcm_setup_regs(void)
{
- u32 omap3630_en_uart4_mask = cpu_is_omap3630() ?
- OMAP3630_EN_UART4_MASK : 0;
- u32 omap3630_grpsel_uart4_mask = cpu_is_omap3630() ?
- OMAP3630_GRPSEL_UART4_MASK : 0;
-
/* XXX This should be handled by hwmod code or SCM init code */
omap_ctrl_writel(OMAP3430_AUTOIDLE_MASK, OMAP2_CONTROL_SYSCONFIG);
- /*
- * Enable control of expternal oscillator through
- * sys_clkreq. In the long run clock framework should
- * take care of this.
- */
- omap2_prm_rmw_mod_reg_bits(OMAP_AUTOEXTCLKMODE_MASK,
- 1 << OMAP_AUTOEXTCLKMODE_SHIFT,
- OMAP3430_GR_MOD,
- OMAP3_PRM_CLKSRC_CTRL_OFFSET);
-
- /* setup wakup source */
- omap2_prm_write_mod_reg(OMAP3430_EN_IO_MASK | OMAP3430_EN_GPIO1_MASK |
- OMAP3430_EN_GPT1_MASK | OMAP3430_EN_GPT12_MASK,
- WKUP_MOD, PM_WKEN);
- /* No need to write EN_IO, that is always enabled */
- omap2_prm_write_mod_reg(OMAP3430_GRPSEL_GPIO1_MASK |
- OMAP3430_GRPSEL_GPT1_MASK |
- OMAP3430_GRPSEL_GPT12_MASK,
- WKUP_MOD, OMAP3430_PM_MPUGRPSEL);
-
- /* Enable PM_WKEN to support DSS LPR */
- omap2_prm_write_mod_reg(OMAP3430_PM_WKEN_DSS_EN_DSS_MASK,
- OMAP3430_DSS_MOD, PM_WKEN);
-
- /* Enable wakeups in PER */
- omap2_prm_write_mod_reg(omap3630_en_uart4_mask |
- OMAP3430_EN_GPIO2_MASK | OMAP3430_EN_GPIO3_MASK |
- OMAP3430_EN_GPIO4_MASK | OMAP3430_EN_GPIO5_MASK |
- OMAP3430_EN_GPIO6_MASK | OMAP3430_EN_UART3_MASK |
- OMAP3430_EN_MCBSP2_MASK | OMAP3430_EN_MCBSP3_MASK |
- OMAP3430_EN_MCBSP4_MASK,
- OMAP3430_PER_MOD, PM_WKEN);
- /* and allow them to wake up MPU */
- omap2_prm_write_mod_reg(omap3630_grpsel_uart4_mask |
- OMAP3430_GRPSEL_GPIO2_MASK |
- OMAP3430_GRPSEL_GPIO3_MASK |
- OMAP3430_GRPSEL_GPIO4_MASK |
- OMAP3430_GRPSEL_GPIO5_MASK |
- OMAP3430_GRPSEL_GPIO6_MASK |
- OMAP3430_GRPSEL_UART3_MASK |
- OMAP3430_GRPSEL_MCBSP2_MASK |
- OMAP3430_GRPSEL_MCBSP3_MASK |
- OMAP3430_GRPSEL_MCBSP4_MASK,
- OMAP3430_PER_MOD, OMAP3430_PM_MPUGRPSEL);
-
- /* Don't attach IVA interrupts */
- if (omap3_has_iva()) {
- omap2_prm_write_mod_reg(0, WKUP_MOD, OMAP3430_PM_IVAGRPSEL);
- omap2_prm_write_mod_reg(0, CORE_MOD, OMAP3430_PM_IVAGRPSEL1);
- omap2_prm_write_mod_reg(0, CORE_MOD, OMAP3430ES2_PM_IVAGRPSEL3);
- omap2_prm_write_mod_reg(0, OMAP3430_PER_MOD,
- OMAP3430_PM_IVAGRPSEL);
- }
-
- /* Clear any pending 'reset' flags */
- omap2_prm_write_mod_reg(0xffffffff, MPU_MOD, OMAP2_RM_RSTST);
- omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP2_RM_RSTST);
- omap2_prm_write_mod_reg(0xffffffff, OMAP3430_PER_MOD, OMAP2_RM_RSTST);
- omap2_prm_write_mod_reg(0xffffffff, OMAP3430_EMU_MOD, OMAP2_RM_RSTST);
- omap2_prm_write_mod_reg(0xffffffff, OMAP3430_NEON_MOD, OMAP2_RM_RSTST);
- omap2_prm_write_mod_reg(0xffffffff, OMAP3430_DSS_MOD, OMAP2_RM_RSTST);
- omap2_prm_write_mod_reg(0xffffffff, OMAP3430ES2_USBHOST_MOD, OMAP2_RM_RSTST);
-
- /* Clear any pending PRCM interrupts */
- omap2_prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
+ omap3_prm_init_pm(cpu_is_omap3630(), omap3_has_iva());
/*
* We need to idle iva2_pwrdm even on am3703 with no iva2.
diff --git a/arch/arm/mach-omap2/prm3xxx.c b/arch/arm/mach-omap2/prm3xxx.c
index 4d93b84..48218a4 100644
--- a/arch/arm/mach-omap2/prm3xxx.c
+++ b/arch/arm/mach-omap2/prm3xxx.c
@@ -275,6 +275,96 @@ void __init omap3_prm_reset_modem(void)
}
/**
+ * omap3_prm_init_pm - initialize PM related registers for PRM
+ * @has_uart4: SoC has UART4
+ * @has_iva: SoC has IVA
+ *
+ * Initializes PRM registers for PM use. Called from PM init.
+ */
+void __init omap3_prm_init_pm(bool has_uart4, bool has_iva)
+{
+ u32 en_uart4_mask;
+ u32 grpsel_uart4_mask;
+
+ /*
+ * Enable control of expternal oscillator through
+ * sys_clkreq. In the long run clock framework should
+ * take care of this.
+ */
+ omap2_prm_rmw_mod_reg_bits(OMAP_AUTOEXTCLKMODE_MASK,
+ 1 << OMAP_AUTOEXTCLKMODE_SHIFT,
+ OMAP3430_GR_MOD,
+ OMAP3_PRM_CLKSRC_CTRL_OFFSET);
+
+ /* setup wakup source */
+ omap2_prm_write_mod_reg(OMAP3430_EN_IO_MASK | OMAP3430_EN_GPIO1_MASK |
+ OMAP3430_EN_GPT1_MASK | OMAP3430_EN_GPT12_MASK,
+ WKUP_MOD, PM_WKEN);
+ /* No need to write EN_IO, that is always enabled */
+ omap2_prm_write_mod_reg(OMAP3430_GRPSEL_GPIO1_MASK |
+ OMAP3430_GRPSEL_GPT1_MASK |
+ OMAP3430_GRPSEL_GPT12_MASK,
+ WKUP_MOD, OMAP3430_PM_MPUGRPSEL);
+
+ /* Enable PM_WKEN to support DSS LPR */
+ omap2_prm_write_mod_reg(OMAP3430_PM_WKEN_DSS_EN_DSS_MASK,
+ OMAP3430_DSS_MOD, PM_WKEN);
+
+ if (has_uart4) {
+ en_uart4_mask = OMAP3630_EN_UART4_MASK;
+ grpsel_uart4_mask = OMAP3630_GRPSEL_UART4_MASK;
+ }
+
+ /* Enable wakeups in PER */
+ omap2_prm_write_mod_reg(en_uart4_mask |
+ OMAP3430_EN_GPIO2_MASK |
+ OMAP3430_EN_GPIO3_MASK |
+ OMAP3430_EN_GPIO4_MASK |
+ OMAP3430_EN_GPIO5_MASK |
+ OMAP3430_EN_GPIO6_MASK |
+ OMAP3430_EN_UART3_MASK |
+ OMAP3430_EN_MCBSP2_MASK |
+ OMAP3430_EN_MCBSP3_MASK |
+ OMAP3430_EN_MCBSP4_MASK,
+ OMAP3430_PER_MOD, PM_WKEN);
+
+ /* and allow them to wake up MPU */
+ omap2_prm_write_mod_reg(grpsel_uart4_mask |
+ OMAP3430_GRPSEL_GPIO2_MASK |
+ OMAP3430_GRPSEL_GPIO3_MASK |
+ OMAP3430_GRPSEL_GPIO4_MASK |
+ OMAP3430_GRPSEL_GPIO5_MASK |
+ OMAP3430_GRPSEL_GPIO6_MASK |
+ OMAP3430_GRPSEL_UART3_MASK |
+ OMAP3430_GRPSEL_MCBSP2_MASK |
+ OMAP3430_GRPSEL_MCBSP3_MASK |
+ OMAP3430_GRPSEL_MCBSP4_MASK,
+ OMAP3430_PER_MOD, OMAP3430_PM_MPUGRPSEL);
+
+ /* Don't attach IVA interrupts */
+ if (has_iva) {
+ omap2_prm_write_mod_reg(0, WKUP_MOD, OMAP3430_PM_IVAGRPSEL);
+ omap2_prm_write_mod_reg(0, CORE_MOD, OMAP3430_PM_IVAGRPSEL1);
+ omap2_prm_write_mod_reg(0, CORE_MOD, OMAP3430ES2_PM_IVAGRPSEL3);
+ omap2_prm_write_mod_reg(0, OMAP3430_PER_MOD,
+ OMAP3430_PM_IVAGRPSEL);
+ }
+
+ /* Clear any pending 'reset' flags */
+ omap2_prm_write_mod_reg(0xffffffff, MPU_MOD, OMAP2_RM_RSTST);
+ omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP2_RM_RSTST);
+ omap2_prm_write_mod_reg(0xffffffff, OMAP3430_PER_MOD, OMAP2_RM_RSTST);
+ omap2_prm_write_mod_reg(0xffffffff, OMAP3430_EMU_MOD, OMAP2_RM_RSTST);
+ omap2_prm_write_mod_reg(0xffffffff, OMAP3430_NEON_MOD, OMAP2_RM_RSTST);
+ omap2_prm_write_mod_reg(0xffffffff, OMAP3430_DSS_MOD, OMAP2_RM_RSTST);
+ omap2_prm_write_mod_reg(0xffffffff, OMAP3430ES2_USBHOST_MOD,
+ OMAP2_RM_RSTST);
+
+ /* Clear any pending PRCM interrupts */
+ omap2_prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
+}
+
+/**
* omap3xxx_prm_reconfigure_io_chain - clear latches and reconfigure I/O chain
*
* Clear any previously-latched I/O wakeup events and ensure that the
diff --git a/arch/arm/mach-omap2/prm3xxx.h b/arch/arm/mach-omap2/prm3xxx.h
index c5f9cba..bc37d42 100644
--- a/arch/arm/mach-omap2/prm3xxx.h
+++ b/arch/arm/mach-omap2/prm3xxx.h
@@ -167,6 +167,7 @@ void omap3xxx_prm_iva_idle(void);
void omap3_prm_reset_modem(void);
int omap3xxx_prm_clear_global_cold_reset(void);
void omap3_prm_save_scratchpad_contents(u32 *ptr);
+void omap3_prm_init_pm(bool has_uart4, bool has_iva);
#endif /* __ASSEMBLER */
--
1.7.9.5
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